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    Apparatus and method for water treatment by a direct co-precipitation/filtration process
    7.
    发明申请
    Apparatus and method for water treatment by a direct co-precipitation/filtration process 审中-公开
    通过直接共沉淀/过滤方法进行水处理的装置和方法

    公开(公告)号：US20050016928A1

    公开(公告)日：2005-01-27

    申请号：US10803170

    申请日：2004-03-17

    申请人： Xiaoguang Meng ,  George Korfiatis

    发明人： Xiaoguang Meng ,  George Korfiatis

    IPC分类号： C02F1/34 ,  C02F1/52 ,  C02F1/70 ,  C02F1/72 ,  C02F1/76 ,  C02F1/78

    CPC分类号： C02F1/34 ,  C02F1/5236 ,  C02F1/705 ,  C02F1/722 ,  C02F1/76 ,  C02F1/78 ,  C02F2101/20 ,  C22B3/22 ,  C22B3/46 ,  Y02P10/234

    摘要： Dissolved inorganic contaminants are removed from a dilute aqueous stream by adding a hydrolysable metal compound to the aqueous stream, co-precipitating a hydrolyzed metal compound with the inorganic contaminants, and, concurrently with the co-precipitation step, filtering the co-precipitate from the dilute aqueous stream using a packed bed filter. The process may be carried out so that the metal oxide co-precipitate forms within the packed bed. Dissolved contaminants, particularly arsenic compounds, are removed more efficiently than by conventional co-precipitation/filtration processes. An apparatus for carrying out the process provides for injection of the hydrolysable metal compound into the dilute aqueous stream immediately upstream of the packed bed filter, without an intervening flocculation or sedimentation vessel, thereby providing an effective contaminant removal system that requires a smaller footprint and lower capital cost than conventional water treatment systems.

    摘要翻译： 通过向水溶液中加入可水解的金属化合物，将水解的金属化合物与无机污染物共沉淀，并且与共沉淀步骤同时从共沉淀步骤中过滤共沉淀物，从稀释的水流中除去溶解的无机污染物 使用填充床过滤器稀释含水流。 该方法可以进行，使得在填充床内形成金属氧化物共沉淀物。 溶解的污染物，特别是砷化合物，比传统的共沉淀/过滤方法更有效地除去。 用于实施该方法的装置提供了将可水解金属化合物注入紧邻填充床过滤器上游的稀水流中，而没有介入的絮凝沉淀容器，从而提供了一种有效的污染物去除系统，其需要较小的占地面积和较低的 资本成本高于传统的水处理系统。